diff --git a/src/main/java/com/github/bartimaeusnek/bartworks/common/tileentities/multis/GT_TileEntity_CircuitAssemblyLine.java b/src/main/java/com/github/bartimaeusnek/bartworks/common/tileentities/multis/GT_TileEntity_CircuitAssemblyLine.java
index 68d7f48e1..199710cbe 100644
--- a/src/main/java/com/github/bartimaeusnek/bartworks/common/tileentities/multis/GT_TileEntity_CircuitAssemblyLine.java
+++ b/src/main/java/com/github/bartimaeusnek/bartworks/common/tileentities/multis/GT_TileEntity_CircuitAssemblyLine.java
@@ -79,10 +79,12 @@
 import gregtech.api.recipe.RecipeMap;
 import gregtech.api.recipe.RecipeMaps;
 import gregtech.api.recipe.check.CheckRecipeResult;
+import gregtech.api.recipe.check.CheckRecipeResultRegistry;
 import gregtech.api.recipe.check.SimpleCheckRecipeResult;
 import gregtech.api.render.TextureFactory;
 import gregtech.api.util.GT_LanguageManager;
 import gregtech.api.util.GT_Multiblock_Tooltip_Builder;
+import gregtech.api.util.GT_Recipe;
 import gregtech.api.util.GT_Utility;
 import mcp.mobius.waila.api.IWailaConfigHandler;
 import mcp.mobius.waila.api.IWailaDataAccessor;
@@ -168,8 +170,9 @@ protected GT_Multiblock_Tooltip_Builder createTooltip() {
                         "Does Circuit Assembler recipes, Minimum Length: " + EnumChatFormatting.RED
                                 + MINIMUM_CIRCUIT_ASSEMBLER_LENGTH
                                 + EnumChatFormatting.GRAY)
+                .addInfo("Recipe tier in Circuit Assembler mode is at most Energy Hatch tier - 1.")
                 .addInfo("This mode supports Crafting Input Buffer/Bus and allows bus separation").addInfo("")
-                .addInfo(BW_Tooltip_Reference.TT_BLUEPRINT).addSeparator()
+                .addSeparator().addInfo(BW_Tooltip_Reference.TT_BLUEPRINT)
                 .beginVariableStructureBlock(2, 7, 3, 3, 3, 3, false)
                 .addStructureInfo("From Bottom to Top, Left to Right")
                 .addStructureInfo(
@@ -283,7 +286,19 @@ public Collection<RecipeMap<?>> getAvailableRecipeMaps() {
 
     @Override
     protected ProcessingLogic createProcessingLogic() {
-        return new ProcessingLogic().enablePerfectOverclock();
+        return new ProcessingLogic() {
+
+            @Override
+            @Nonnull
+            protected CheckRecipeResult validateRecipe(@Nonnull GT_Recipe recipe) {
+                // limit CA mode recipes to hatch tier - 1
+                if (GT_TileEntity_CircuitAssemblyLine.this.mode == 1
+                        && recipe.mEUt > GT_TileEntity_CircuitAssemblyLine.this.getMaxInputVoltage() / 4) {
+                    return CheckRecipeResultRegistry.NO_RECIPE;
+                }
+                return CheckRecipeResultRegistry.SUCCESSFUL;
+            }
+        }.enablePerfectOverclock();
     }
 
     @NotNull